The Conference on Multiple Legalities is organized as part of the interdisciplinary research group “Overlapping Spheres of Authority and Interface Conflicts in the Global Order”. Three research groups present their main insights from this multi-year collaborative endeavor in conversation with Jeffrey L. Dunoff. Some research results can be found in a Global Constitutionalism Special Issue.
How does multiplicity in law beyond (and within) the state affect our understanding of the nature of law? In this discussion, international law scholar Sarah Nouwen engages in a conversation with legal philosophers Brian Z. Tamanaha and Christoph Möllers to take stock of the debate and its implications for theories of law.
Formal legal rules do not appear out of thin air. Rather, their emergence is conditioned by frameworks that are invisible to the formalist perspective. This panel looks at how formal law is driven by an array of less visible factors: data, algorithms, and broader “background rules”.
How do different legal orders interact vertically? Is this interaction marked by conflict and contestation, or by compromise and collaboration? This panel looks at three different such interactions: between domestic courts and the Inter-American Court of Human Rights; between regional human rights courts and United Nations Treaty Bodies; and between Swiss domestic law and the lex sportiva.
When attempting to analyse multiple legalities, various conceptualizations have been and continue to be offered to capture this phenomenon. These different conceptualizations rest on different images of multiplicity. How do we arrive at such diverging conceptualizations, and what are the reasons behind them? This panel presents and discusses three different images of multiplicity.
This panel assembles four eminent international law scholars to discuss how the multiplicity of law beyond the state observed over the past two days affects the study of international law today. What are the prospects for international law as a discipline?
In closing, we aim to take stock of the two-day conference and our attempt to bring into conversation scholars from different backgrounds to understand the implications of multiplicity for the theory and practice of law beyond the state.
13. September 2025
Giovanni Capoccia
12. September 2025
Anne Peters
12. September 2025
Anne Peters